Valve-operating mechanism



March 26, 1929. G. J. BELKNA P VALVE OPERATING MECHANISM Filed April 14,1928 INVENVTOR. By wrlyzlx fl ATTORNEY.

Patented Mar. 26, 1929.

UNITED STATES enonen J. BELKNAP, or nnrnenronr, connno'rrcu r.

VALVE-OPERATING MECHANISM.

Application filed April 14,

This invention relates to mechanism for operating reciprocating valves01 the quick action type, having an outwardly projecting valve spindle,said mechanism compris- .ing a guide support adjustably connected to thevalve body, a cam lever operatively mounted in the support, a guideoperatively mounted in the support and interposed be tween the cam leverand valve spindle to insure a free movement of the spindle under thewiping pressure of the cam lever.

A further object 01 the invention is to provide means on the supportwhereby a one piece guide can readily be inserted and removed therefromand maintained in operative position when assembled thereto.

Referring to the accompanying drawings wherein the same characters ofreference indicate like parts throughout the several views Figure 1represents in elevation a valve body and guide supporting mechanismattached thereto and broken view of the cam lever Figure 2 is a centralsectional elevation of the guide supporting mechanism and broken view ofthe valve body-.-

Figure 3 is an enlarged detail elevation of the guide support Figure 4:is an enlarged broken View of the guide support, valve neck and camlever, showing the guide in its elevated position- Figure 5 is anenlarged detail end elevation of the guide- Figure 6 an enlarged sideelevation of the guide, and

Figure 7 is an enlarged plan view of the same.

1 represents an ordinary valve body having the conventional threadedneck 2, the cap 3, jam nut 4-, and the valve spindle 5, said spindlebeing normally under the ten sion of a spring and connected with avalve, not shown, within the body 1.

6 is a guide support rotatably mounted on the neck 2 and is secured inany desired position by the jam nut 1. 7 is a lever having the cam face8 and is pivotally supported on the screw 9 passing transversely throughthe opening 10 of the support 6.

11 is a one piece guide having a reciproeating movement in the support 6under the pressure of the cam lever and impulse of the spring actuatedvalve spindle.

1928. Serial No. 269,925.

the corner portions 16, 17, of the guide pass freely through theopenings 20, 21, to bring the channels 1 1-, 15, in alignment with thesaid guide way sections.

When the guide and cam lever are as sembled to the support, the cam partof the lever will always be in contact with the guide, and thus checkits outward movement :far enough below the head 22 of the centralopening 23, Figures 1 and 1, to prevent its accidental displacement, forthe guide cannot be assembled to its support or removed therefromwithout first removing the cam lever.

To extend the guide ways of the support the full length of the centralopening 28 would materially increase the cost of pro duction as it wouldnecessitatemaking the guide in two parts and joining the parts atterassembling them in the support. Making the guide in one piece, and theguide ways'in sections, the guide can readily be attached to the supportand detached therefrom.

The advantageoti. interposing a movable guidemember between the camlever and valve spindle will avoid the lateral strain or spring ofthespindle due to the wiping effect of the cam lever when brought indirect contact with the spindle. The guide being slidably engaged withboth sides of its support will always insure its moving in parallelrelation with the movement of the spindle. The advantage and beneficialresult of this arrangement is equally applicable to supports havingunbroken guide ways and a two part guide, as well. as the preferable onepiece guide and interrupted guide ways.

If desired, recessed or sunken guide ways could be substituted for theprojecting ones shown.

Having thus described my invention what I claim is 1. The hereindescribed quick opening valve mechanism, comprising a guide sup- )ortingmember associated with a valve ody and valve spindle, a cam leverpivoted e guide constructed to pass through said'openingsand mounted inthe support and operatively positioned between theivalve spindle vandrthe cam lever.

2. The herein 'deseribed quick 0. ening valve mechanis1n,.comprising agui e supporting frznne rotatably associated with a valve body, a valvespindle projecting from the valve body, a cam lever pivoted to theframe, a guide member engaging opposite Sides of the frame andpositioned between the cam lever and the valve spindle.

Ill testimony whereof I alllx my signature GEORGE J. BELKNAP.

